I spend a lot of time writing and doing research on a laptop every day. I foolishly sold a mid-2009 MBA for a MBP in 2016 and grew to despise the keyboard and dread working on it. I was only too happy to trade in the MPB for a modern MBA (i7, 16 GB memory, 1 TB storage). I haven't noticed any change in performance, and the keyboard is a genuine joy to type on.